For the person looking for copper chains-- I asked my friend who
uses them, as I promised. She buys from Metaliferous, but also from
Double Joy Beads. They are at 7119 E Sahuaro Dr, Scottsdale, AZ
85254, (602)998-4495 or 1 800 497-3702, as of a couple of years ago.
I just checked–they are at http://www.doublejoybeads.com/